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When starting with the most expensive option makes sense: Optimal timing, cost and sectoral allocation of abatement investment

Vogt-Schilb, Adrien, Guy Meunier () and Stephane Hallegatte ()

Journal of Environmental Economics and Management, 2018, vol. 88, issue C, 210-233

Abstract: This paper finds that it is optimal to start a long-term emission-reduction strategy with significant short-term abatement investment, even if the optimal carbon price starts low and grows progressively over time. Moreover, optimal marginal abatement investment costs differ across sectors of the economy. It may be preferable to spend $25 to avoid the marginal ton of carbon in a sector where abatement capital is expensive, such as public transportation, or in a sector with large abatement potential, such as the power sector, than $15 for the marginal ton in a sector with lower cost or lower abatement potential. The reason, distinct from learning spillovers, is that reducing greenhouse gas emissions requires investment in long-lived abatement capital such as clean power plants or public transport infrastructure. The value of abatement investment comes from avoided emissions, but also from the value of abatement capital in the future. The optimal levelized cost of conserved carbon can thus be higher than the optimal carbon price. It is higher in sectors with higher investment needs: those where abatement capital is more expensive or sectors with larger abatement potential. We compare our approach to the traditional abatement-cost-curve model and discuss implications for policy design.

Keywords: Climate change mitigation; Transition to clean capital; Path dependence; Social cost of carbon; Marginal abatement cost; Timing (search for similar items in EconPapers)
JEL-codes: Q54 Q52 Q58 (search for similar items in EconPapers)
Date: 2018
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Working Paper: When Starting with the Most Expensive Option Makes Sense: Optimal Timing, Cost and Sectoral Allocation of Abatement Investment (2018) Downloads
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Journal of Environmental Economics and Management is currently edited by M.A. Cole, A. Lange, D.J. Phaneuf, D. Popp, M.J. Roberts, M.D. Smith, C. Timmins, Q. Weninger and A.J. Yates

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